Name: Hobin Yu (Shimura Kota) 2nd year high school student. Everyone calls him Hobin. Appearance: At first glance, he looks like an ordinary high school student. He's a bit thin and looks somewhat weak. Personality: Kind and devoted to his family. Surprisingly good at going along with the mood. He has a sense of justice and can't overlook people in trouble or bad deeds. He's not very experienced with romance and doesn't know how to react when women show interest in him. Due to his small stature, he was bullied by Pakgo and others at school. He is a filial son who works multiple part-time jobs to earn living expenses for his hospitalized mother. Triggered by a fight video with Snapper, he starts the "How to Fight" channel and acquires martial arts skills by watching "Samdak's" videos. Later, he establishes the NewTuber group "Hobin Yu Company" and becomes its CEO. He possesses an indomitable fighting spirit, refusing to yield to bullying or unreasonable violence with his gritty toughness and competitive nature. He also has a materialistic side (miserly streak), showing a strong obsession with donations and streaming revenue, and has the unique, realistic guts to fight through pain for the sake of money. During a fight, he shouts the names of techniques like "How to get hit without it hurting!" and can execute moves quickly. He is observant and quick to absorb new techniques and tips. When he knows he'll get paid, he gets energized even if he's injured. He loves the sound of donations. He likes Bomi.

Name: Jihyeok Woo (Kaneko Toru) Height: Approx. 176.5cm 2nd year high school student. Everyone calls him Snapper. He used to bully Hobin as a hanger-on in a delinquent group, but after an accidental fight broadcast, he teams up with Hobin and becomes his partner in running the "How to Fight" channel. Personality: He has a pilot fish-like nature, sucking up to those he thinks are strong, with a noticeable pettiness and craftiness. He has a strong desire to be seen as cool and follows those in power with all his might. Even though he's weak at fighting himself, he acts tough by using strong people; he can't exactly be called a nice person. He's a scumbag but a good guy. Coming from a wealthy family, he owns filming equipment and co-founded the "How to Fight" channel with Hobin. He gets carried away easily. He has high production skills. He is particular about camera angles and how the video looks, and proposes ideas for video distribution to Hobin.

Name: Gaeul (Yashio Aki) 1st year high school student. Everyone calls her Gaeul. A 1st year high school student, one grade below Hobin and the others. She provided accurate comments on Hobin's fight videos using her knowledge of martial arts and joined the company after responding to a recruitment for a video editor. She has martial arts experience herself. She has the strength to remain unfazed even in trouble or during fights. A returnee who learned Japanese/Korean through the internet, she has a boisterous personality and speaks like an old man despite her appearance. She lives alone with her father, who runs a dry cleaning shop. She secretly harbors feelings for Hobin and once tried to speak in a more girlish tone. She views Rumi and Bomi as rivals. She was appointed as the "Hired CEO" of the Hobin Yu Company. Because she learned her speech patterns entirely online, her trademark is her energetic "old man" style of speaking, using phrases like "~it is, sir!" or "~indeed!"

Name: Taehun Seong (Shinjo Reo) 2nd year high school student. Height: 188.6cm Everyone calls him Taehun. Personality: Tsundere. He says exactly what's on his mind. A delinquent high school student with a dangerous, somewhat psychopathic side. However, he is extremely popular with fans. A former Taekwondo athlete. He is a cool, handsome guy, and whenever he appears in a video, fan comments flood in. After losing a match to Hobin Yu, he begins to cooperate with the video broadcasts, though his attitude remains blunt. He also started his own channel, "Taehun TV," which gained 100,000 subscribers before he even posted a single video. Interests: MMA, exercise, fighting games, heckling action movies, watching "How to Fight" videos, "Got 100 won?" Likes: Cool breezes, the scent of soap, black/red, soft things, cozy spaces, leaving the lights on, pranks, tigers, rich people, a free life, being praised for Taekwondo, friends, money, his father. Dislikes: Boresome things, dull things, mocking attitudes, scoffing, arrogance, people touching his belongings without permission, spicy food, pungent smells, rain, dolls. He is fond of Hobin. No specific type in romance. No complexes.

Name: Rumi Yeo (Meguro Rumi) Everyone calls her Rumi. 2nd year high school student. Hobin Yu's classmate and a beauty NewTuber. Initially, she was a bystander to the bullying, but she becomes involved as Hobin's streaming popularity rises. She has the pride and struggles of a beauty NewTuber and harbors secret feelings for the protagonist, Hobin.

Name: Mangi Hwang Height: 207cm A man who became a "Cheonhajangsa" (Grand Champion) in Ssireum (Korean wrestling) at the young age of 17. Likes women; dislikes handsome guys. He is a massive eater. He works part-time at a butcher shop. He picks fights in search of stronger opponents. He actually suffers from premature balding and always wears a wig.

Name: Yeonu Ji (Fujii Sho) A study-themed NewTuber with 1.8 million subscribers who broadcasts himself studying. He is highly popular among female viewers and classmates because of his excellent grades, dedication to volunteer work, and handsome appearance. He was formerly a Kyokushin Karate practitioner. Serious and calm.

Name: Bomi Choi (Asamiya Kaho) The heroine. She has a refined appearance and looks perfect to those around her. While she seems like a beautiful, composed, and reliable person, she also has a charming personality with a slightly ditzy side. Romantically, she likes Hobin.